I have a good example here! It is a calculator inside Desmos that is basically fully functional (I made it by myself). Also, @BadAtMath created a math practice graph here.
Welcome, @Carl_Cortez!
Not always specifically about using Desmos (Amplify), but Dan Meyer has been blogging about math instruction and education technology for quite a while (link). There’s also a Facebook group, Amplify Educators, where you’ll likely get a lot of response to your query.